Secondary battery



UNITED STATES PATENT OFFICE. t

JOHN B. PRICE, OF XVOLLASTON HEIGHTS, MASSACIIUSETTS, ASSIGNOR TO THE ELECTRICAL ACCUMULATOR COMPANY, OF NEXV YORK.

SECON DARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 403,957, datecl May 28, 1889.

Application filed March 26, 1889.

To all whom it may conccrn.

Be it known that I, JOHN B. PRICE, a citizen of the United States, and a resident of VVollaston Heights, in the county of Norfolk and State of Massachusetts, have invented certain new anduseful Improvements in Secondary Batteries, of which the following is a specification.

My invention is an improvement in seco ondary batteries or aecumulators.

The invention more particularly has reference to the arrangement of the plates in the cell, Whereby they are supported free from the bottom of the cell in a manner which facilitates the removal of one element without disturbing the other, which retains the plates at a uniform distance from each other. Heretofore others have united the several plates forming one element of a pair by strips of metal fixed upon opposite edges near the central height of the plates, and have provided the plates of the complementary element with projections upon opposite edges, (lesigned to rest upon and besupported by the strips of the first element. Others' have supported both series of plates upon projections located within the cell midway its vertical distance, projections being provided upon opposite edges of each element to rest upon such supports. One form of Construction last described consists of a pair or strip of insnlating material having two lines of perforations, through which projections from one element are thrust and riveted by beat- 3 5 ing down the projecting end.

My invention consists in providing boards or strips of insulating material extending across the cell and about half 'its height. Near the upper edge and near the lower edge 4o there are rows of equidistant perforat-ions.

Projections from each plate of an element are thrust through these perforations. The outer end of these ears or projections are perforated, and a rod is run through the entire series of projections to fasten them in position, at the same time providing for their easy and expeditious removal without the use of special tools.

The accompanying drawings illustrate my invention.

Figure 1 is a complete perspective View of Serial No. 3043425. (No model.)

the two elements. Fig. 2 is a detail View showing a section of the board of insulating material, the perforated projeetions from the plate, and the removable rod in position.

The two elements P and a are each composed of a series of perforated plates, interleaved with each other in a well-known manner.

e' is a board of insulating nateriahin width about half the height of an element and in breadth equal to the width of the cell. The plates of the element P are united meehanically and electrically by lugs or stripsl and I'. About half the vertical distance of each plate of the element P and on opposite edges there are projections 1).

t' is a board of insulating material, as hard rubber. lt is about one-half the height of an element, and extends completely across the interior of the cell. It is furnished with a rowof equidistant perforations near its upper edge and a similar row of perforations near its lower edge. From each plate of the element 72 upon opposite edges, there are 75 projections a near the central height. There are similar projections upon both edges near the lower corners, such as a'. These project-ions fit the 1,erforatio's in the board L', and extend completelythrough said board. Near the outer end each projection a and a' is perforated to receive a rod, I). This rod is pret'- erably of insulating 'naterial, as hard rubber. By this arrangementthe series of plates n are maintained equidistant, and are supported free from the bottom by the board ol" iusulating material i. ly withdrawing the rod b any plate may be removed and replaced without the use ot' special tools. The element P has its plates interleaved with the 0 plates of the clementmand when in position its projections p upon both edges rest upon and are supported by the board of insulating material 17. In this way both elements are free and clear from the bottom of the cell, and 5 by placing the hands on strips Z and Z' the element P can be easily removed without disturbing the element a. Parallel strips of insulating material, united at the upper ends,

s, are placed over each plate of the element Ioo P to mechanieally and eleetrieally separate such plates from the plates of the element 72.

The plates of the element n are united at their upper extremity by a strip of conducting material, m.

In Fig. 2 a section of the board i, showing the perforation near the lower edge, the projection a' from a plate of the series n, and the rod b in position are clearly shown.

WVhat I claim, and desire to secure by Letters Patent, is-

`1. In a secondary battery, the combination of two elements or eleetrodes, an inclosing-eell therefor, an eleetrolytie liquid, and means for supporting both eleetrodes free from the bottom of the cell, consisting of boards or strips of insulating material having one or more rows of perforations,perforated projections from opposite edges of one element located in said perforations, a removable rod for looking said projeetions in position, and a series of projections upon the oomplementary element supported by said board or strip, substantially as described.

.Signed at New York, in the County of New York and State of New York, this 22d day' of March, A. D. 1889. v

JOHN B; PRICE.

W itnesses:

DANIEL E. DELAVAN, V. E. SCHAUMBURG. 

